Improvement in lift and force pumps



W. G. FAWOETT. v Lift and Foroelump.

No. 214,556. Pte'nted April 22', I879.

N. PETERS, PHOTO-UTHDGRAPHER, WASHINGTON, D C

UNITED STATES PATENT QFFIOE.

\VILLIS G. FAIVOETT, OF SALEM, OHIO.

IMPROVEMENT IN LIFT AND FORCE PUMPS.

Specification forming part of Letters Patent No. 214,556, dated April 22, 1879 application filed February 17, 1879.

To all whom itmag concern Be it known that I, WILLIS G. FAWGETT, of Salem, in the county of Columbiana and State of Ohio, have. invented certain new and useful Im provements in Lift and Force Pumps; and I do hereby declare that the following is a full, clear, and exact description of the invention, which will enable others skilled in the art to which it appertains to make and use the same, reference being had to the accompanying drawings, and to letters of reference marked thereon,which form a part of this specification, in which- Figure 1 is aside view, and Fig. 2 a vertical section.

My invention relates to hand force-pumps,

and is designed for use in washing windows,

, sides of which are perforated, and within which is formed or placed a perforated partition, b. Above this partition there is formed a valve-seat, c, which has the usual opening therein, and over it is fitted a valve, B. This valve may be secured in position by a framework, (hover the same, or may be hinged or operatively secured in any other known way.

A hollow. plunger, D, fits and works within the pump -barrel, and its diameter is nearly that of the barrel. Itis contracted or recessed at its lower end, as seen in Fig. 2, in order that a packing, d, of rubber or other suitable material, may be fittedtherearound. At this same end of the plunger there is made a valve-seat, c, with the usual opening therein, and above is the valve E, the construction of the valve and its appendages being the same as described for the valve to the barrel, if so desired. The upper end of this plunger is provided with a flaring cap, F, which is preferably made to .the valve F a tube orpipe, H, the lower end thereof flaring outwardly, as shown in Fig. 2. This pipe is soldered or otherwise secured to the cap or to the sides of the plunger, and to the end, which extends to the outside, there is afflxed a flexible pipe or tubing, I.

To the outside of the pump-barrel there is attached a step, J, and also a pipe, K, which communicates with the interior of the barrel, and extends on the outside from near the top down to near the bottom of the barrel, its function being to conduct such water as may get between the sides of the plunger and the barrel down outside the latter, and in that manner prevent itfrom squirting out at the top of the barrel. The air-chamber in the form of pump illustrated by Fig. 2 is of nearly the same diameter as the barrel, and of greater diameter than the interior of water-pipe H, the object thereof being to get an air-space much larger than the chamber for the outflow of the water, so that considerable air-pressure will be exerted on the water admitted into the plunger, and

thereby force it out through pipe H in quite a continuous and uniform stream on the upward stroke of the plunger, as well as on the downward stroke thereof.

In operating this form of pump, the barrel is set in a vessel containing water; the foot is rested on the step J, the handle to the cap of the plunger grasped with the hand of the operator, and the plunger alternately raised and lowered. On the upward stroke of the plunger the valve B opens, and valve E closes water is drawn into the barrel and fills the space between the plunger and barrel. Then, on the downstroke of the plunger, valve 13 closes and valveE opens; water flowsinto the tubular plunger, and is forced up through pipe H and out through tubing I. Now, on the upward stroke of the plunger, the operation is as before stated, with the exception that the water is continued to be forced through pipe H in quite as uniform a stream as before, by reason of the nation with tubular plunger 1), provided with valve E and paekingd, and cap F, constructed as described, and adapted to screw into the plunger, and provided with exit pipe H, all constructed and adapted to operate substantially as set forth.

In testimony that I claim the foregoing as my own I affiX my signature in presence of two witnesses.

WILLIS G. FAWCETT. Witnesses:

ALLEN K. TATIJM, RUSH TAGGART. 

